/* =========================================================
   Utilities Bunker — Resources Index CSS (v2.1)
   File: /assets/css/modules/resources/index.v2.1.css
   Purpose:
     Dedicated styling for the Resources Library hub page.
   Notes:
     - Works with UB Toolkit v2.1
     - Dark-mode first visual style
     - Clean card grid with strong section hierarchy
   ========================================================= */

/* =========================
   Page / Layout
   ========================= */
.ub-resources-index {
  --ub-res-bg-1: #08111f;
  --ub-res-bg-2: #0d1728;
  --ub-res-bg-3: #101c31;
  --ub-res-panel: #0f1a2d;
  --ub-res-panel-2: #12213a;
  --ub-res-card: #14233d;
  --ub-res-card-hover: #182a49;
  --ub-res-border: #223552;
  --ub-res-border-strong: #2e4770;
  --ub-res-text: #e8eefc;
  --ub-res-text-soft: #b7c4db;
  --ub-res-text-dim: #90a0ba;
  --ub-res-accent: #4da3ff;
  --ub-res-accent-2: #7fc2ff;
  --ub-res-accent-glow: rgba(77, 163, 255, 0.22);
  --ub-res-chip: #162845;
  --ub-res-success: #7dd3a6;
  --ub-res-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --ub-res-shadow-soft: 0 10px 24px rgba(0, 0, 0, 0.18);

  background:
    radial-gradient(circle at top right, rgba(77, 163, 255, 0.10), transparent 28%),
    radial-gradient(circle at top left, rgba(127, 194, 255, 0.06), transparent 24%),
    linear-gradient(180deg, var(--ub-res-bg-1) 0%, var(--ub-res-bg-2) 50%, var(--ub-res-bg-1) 100%);
  color: var(--ub-res-text);
  min-height: 100vh;
  padding: 28px 0 64px;
}

.ub-resources-index .ub-shell {
  width: min(1400px, calc(100% - 24px));
  margin: 0 auto;
}

/* =========================
   Breadcrumbs
   ========================= */
.ub-breadcrumbs {
  margin: 0 0 18px;
}

.ub-breadcrumbs-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  color: var(--ub-res-text-dim);
  font-size: 0.92rem;
}

.ub-breadcrumbs-list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.ub-breadcrumbs-list li:not(:last-child)::after {
  content: "/";
  color: #5f769c;
}

.ub-breadcrumbs-list a {
  color: var(--ub-res-text-soft);
  text-decoration: none;
}

.ub-breadcrumbs-list a:hover,
.ub-breadcrumbs-list a:focus-visible {
  color: var(--ub-res-accent-2);
  text-decoration: underline;
}

/* =========================
   Hero
   ========================= */
.ub-resources-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.8fr);
  gap: 20px;
  align-items: stretch;
  padding: 26px;
  margin: 0 0 20px;
  border: 1px solid var(--ub-res-border);
  border-radius: 22px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01)),
    linear-gradient(180deg, rgba(17, 31, 53, 0.96), rgba(10, 19, 34, 0.96));
  box-shadow: var(--ub-res-shadow);
  position: relative;
  overflow: hidden;
}

.ub-resources-hero::before {
  content: "";
  position: absolute;
  inset: auto -8% -38% auto;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(77, 163, 255, 0.16), transparent 68%);
  pointer-events: none;
}

.ub-hero-copy,
.ub-hero-stats {
  position: relative;
  z-index: 1;
}

.ub-eyebrow {
  margin: 0 0 10px;
  color: var(--ub-res-accent-2);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.ub-title {
  margin: 0 0 10px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ub-res-text);
}

.ub-lead {
  margin: 0;
  max-width: 70ch;
  color: var(--ub-res-text-soft);
  font-size: 1rem;
  line-height: 1.65;
}

.ub-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* =========================
   Buttons / Inputs
   ========================= */
.ub-btn {
  appearance: none;
  border: 1px solid var(--ub-res-border-strong);
  border-radius: 12px;
  padding: 11px 16px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    transform 0.18s ease,
    box-shadow 0.18s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
}

.ub-btn:hover,
.ub-btn:focus-visible {
  transform: translateY(-1px);
}

.ub-btn:focus-visible,
.ub-input:focus-visible,
.ub-chip:focus-visible,
.ub-resource-link:focus-visible,
.ub-section-backlink:focus-visible,
.ub-breadcrumbs-list a:focus-visible {
  outline: 2px solid var(--ub-res-accent);
  outline-offset: 2px;
}

.ub-btn-primary {
  color: #06101d;
  background: linear-gradient(180deg, #7fc2ff 0%, #4da3ff 100%);
  border-color: #74b9ff;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.04) inset, 0 12px 24px rgba(43, 118, 208, 0.28);
}

.ub-btn-primary:hover,
.ub-btn-primary:focus-visible {
  background: linear-gradient(180deg, #98ceff 0%, #63afff 100%);
}

.ub-btn-secondary {
  color: var(--ub-res-text);
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--ub-res-border-strong);
}

.ub-btn-secondary:hover,
.ub-btn-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.05);
  border-color: #3f5e8d;
}

.ub-label {
  display: block;
  margin: 0 0 8px;
  font-weight: 700;
  color: var(--ub-res-text);
}

.ub-input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--ub-res-border-strong);
  border-radius: 12px;
  background: #0b1627;
  color: var(--ub-res-text);
  padding: 0 14px;
  font: inherit;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background-color 0.18s ease;
}

.ub-input::placeholder {
  color: #7f91af;
}

.ub-input:hover,
.ub-input:focus-visible {
  border-color: #4a73a9;
  box-shadow: 0 0 0 4px var(--ub-res-accent-glow);
}

.ub-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
}

.ub-help-text {
  margin: 10px 0 0;
  color: var(--ub-res-text-dim);
  font-size: 0.92rem;
  line-height: 1.5;
}

/* =========================
   Hero stats
   ========================= */
.ub-hero-stats {
  display: grid;
  gap: 12px;
  align-content: start;
}

.ub-stat-card {
  border: 1px solid var(--ub-res-border);
  border-radius: 18px;
  padding: 16px 18px;
  background:
    linear-gradient(180deg, rgba(17, 31, 53, 0.88), rgba(12, 23, 40, 0.92));
  box-shadow: var(--ub-res-shadow-soft);
}

.ub-stat-value {
  display: block;
  margin: 0 0 4px;
  font-size: 1.8rem;
  line-height: 1;
  font-weight: 800;
  color: var(--ub-res-accent-2);
}

.ub-stat-label {
  display: block;
  color: var(--ub-res-text-soft);
  font-size: 0.92rem;
}

/* =========================
   Generic card sections
   ========================= */
.ub-card,
.ub-resource-section {
  border: 1px solid var(--ub-res-border);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(16, 28, 49, 0.94), rgba(12, 21, 37, 0.94));
  box-shadow: var(--ub-res-shadow-soft);
}

.ub-card {
  padding: 18px;
  margin: 0 0 18px;
}

.ub-card-header {
  margin-bottom: 12px;
}

.ub-card-body > :first-child {
  margin-top: 0;
}

.ub-card-body > :last-child {
  margin-bottom: 0;
}

.ub-card-body p {
  color: var(--ub-res-text-soft);
  line-height: 1.7;
}

.ub-section-title {
  margin: 0;
  font-size: clamp(1.18rem, 2vw, 1.45rem);
  line-height: 1.2;
  font-weight: 800;
  color: var(--ub-res-text);
}

/* =========================
   Ad placeholders
   ========================= */
.ub-card-ad {
  padding: 16px;
}

.ub-ad-box {
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--ub-res-text-dim);
  border: 1px dashed #446086;
  border-radius: 16px;
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(255,255,255,0.018),
      rgba(255,255,255,0.018) 10px,
      rgba(255,255,255,0.008) 10px,
      rgba(255,255,255,0.008) 20px
    ),
    #0d1728;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.ub-ad-box-top {
  min-height: 90px;
}

.ub-ad-box-mid {
  min-height: 280px;
  max-width: 336px;
  margin: 0 auto;
}

/* =========================
   Jump chips
   ========================= */
.ub-chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ub-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--ub-res-border-strong);
  background: var(--ub-res-chip);
  color: var(--ub-res-text);
  text-decoration: none;
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    background-color 0.18s ease,
    box-shadow 0.18s ease;
}

.ub-chip:hover,
.ub-chip:focus-visible {
  transform: translateY(-1px);
  border-color: #4c74aa;
  background: #1a3052;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.22);
}

.ub-chip-label {
  font-weight: 700;
}

.ub-chip-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  background: rgba(77, 163, 255, 0.14);
  color: var(--ub-res-accent-2);
  font-size: 0.84rem;
  font-weight: 800;
}

/* =========================
   Resource sections
   ========================= */
.ub-resource-sections {
  display: grid;
  gap: 18px;
}

.ub-resource-section {
  padding: 18px;
}

.ub-section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(74, 110, 160, 0.35);
}

.ub-section-meta {
  margin: 6px 0 0;
  color: var(--ub-res-text-dim);
  font-size: 0.92rem;
}

.ub-section-backlink {
  color: var(--ub-res-accent-2);
  text-decoration: none;
  font-weight: 700;
  white-space: nowrap;
}

.ub-section-backlink:hover,
.ub-section-backlink:focus-visible {
  text-decoration: underline;
}

/* =========================
   Resource card grid
   ========================= */
.ub-resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.ub-resource-card {
  min-width: 0;
}

.ub-resource-card[hidden],
.ub-resource-section[hidden] {
  display: none !important;
}

.ub-resource-link {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  min-height: 100%;
  height: 100%;
  padding: 16px;
  border: 1px solid var(--ub-res-border);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(20, 35, 61, 0.96), rgba(16, 29, 50, 0.96));
  color: inherit;
  text-decoration: none;
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    background-color 0.18s ease,
    box-shadow 0.18s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.ub-resource-link:hover,
.ub-resource-link:focus-visible {
  transform: translateY(-2px);
  border-color: #4b73aa;
  background:
    linear-gradient(180deg, rgba(24, 42, 73, 0.98), rgba(19, 34, 58, 0.98));
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
}

.ub-resource-card-body {
  min-width: 0;
}

.ub-resource-title {
  margin: 0 0 8px;
  color: var(--ub-res-text);
  font-size: 1rem;
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.ub-resource-desc {
  margin: 0;
  color: var(--ub-res-text-soft);
  font-size: 0.93rem;
  line-height: 1.58;
}

.ub-resource-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ub-resource-tag {
  display: inline-flex;
  align-items: center;
  max-width: calc(100% - 40px);
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(77, 163, 255, 0.12);
  color: var(--ub-res-accent-2);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.2;
}

.ub-resource-arrow {
  color: var(--ub-res-accent-2);
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1;
  flex: 0 0 auto;
}

/* =========================
   Lists
   ========================= */
.ub-list {
  margin: 0;
  padding-left: 18px;
  color: var(--ub-res-text-soft);
  line-height: 1.7;
}

.ub-list li + li {
  margin-top: 8px;
}

/* =========================
   Light mode fallback
   ========================= */
@media (prefers-color-scheme: light) {
  .ub-resources-index {
    --ub-res-bg-1: #eef4fb;
    --ub-res-bg-2: #f7faff;
    --ub-res-bg-3: #ffffff;
    --ub-res-panel: #ffffff;
    --ub-res-panel-2: #f8fbff;
    --ub-res-card: #ffffff;
    --ub-res-card-hover: #f4f8ff;
    --ub-res-border: #d7e2f0;
    --ub-res-border-strong: #bdd0e8;
    --ub-res-text: #0f172a;
    --ub-res-text-soft: #44556f;
    --ub-res-text-dim: #667892;
    --ub-res-accent: #1f6fd6;
    --ub-res-accent-2: #165fc0;
    --ub-res-accent-glow: rgba(31, 111, 214, 0.14);
    --ub-res-chip: #edf4fe;
    --ub-res-shadow: 0 18px 40px rgba(31, 56, 94, 0.08);
    --ub-res-shadow-soft: 0 10px 24px rgba(31, 56, 94, 0.06);
    background:
      radial-gradient(circle at top right, rgba(31, 111, 214, 0.08), transparent 28%),
      radial-gradient(circle at top left, rgba(22, 95, 192, 0.04), transparent 24%),
      linear-gradient(180deg, var(--ub-res-bg-1) 0%, var(--ub-res-bg-2) 50%, var(--ub-res-bg-1) 100%);
  }

  .ub-resources-hero,
  .ub-card,
  .ub-resource-section {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 255, 0.98));
  }

  .ub-stat-card,
  .ub-resource-link {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 251, 255, 0.98));
  }

  .ub-input {
    background: #ffffff;
  }

  .ub-ad-box {
    background:
      repeating-linear-gradient(
        -45deg,
        rgba(15, 23, 42, 0.025),
        rgba(15, 23, 42, 0.025) 10px,
        rgba(15, 23, 42, 0.01) 10px,
        rgba(15, 23, 42, 0.01) 20px
      ),
      #f9fbff;
  }

  .ub-btn-primary {
    color: #ffffff;
    background: linear-gradient(180deg, #2e7de1 0%, #1f6fd6 100%);
    border-color: #2d78da;
    box-shadow: 0 12px 24px rgba(31, 111, 214, 0.18);
  }

  .ub-btn-primary:hover,
  .ub-btn-primary:focus-visible {
    background: linear-gradient(180deg, #3a89ea 0%, #2a79de 100%);
  }
}

/* =========================
   Responsive
   ========================= */
@media (max-width: 1100px) {
  .ub-resources-hero {
    grid-template-columns: 1fr;
  }

  .ub-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .ub-resources-index {
    padding: 20px 0 52px;
  }

  .ub-resources-index .ub-shell {
    width: min(100% - 16px, 1400px);
  }

  .ub-resources-hero,
  .ub-card,
  .ub-resource-section {
    border-radius: 18px;
  }

  .ub-resources-hero,
  .ub-card,
  .ub-resource-section {
    padding: 16px;
  }

  .ub-search-row {
    grid-template-columns: 1fr;
  }

  .ub-section-heading {
    align-items: start;
    flex-direction: column;
  }

  .ub-resource-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }

  .ub-hero-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .ub-title {
    font-size: 1.9rem;
  }

  .ub-lead {
    font-size: 0.96rem;
  }

  .ub-hero-actions {
    flex-direction: column;
  }

  .ub-btn {
    width: 100%;
  }

  .ub-chip-grid {
    gap: 8px;
  }

  .ub-chip {
    width: 100%;
    justify-content: space-between;
  }

  .ub-resource-grid {
    grid-template-columns: 1fr;
  }

  .ub-resource-link {
    padding: 14px;
  }

  .ub-resource-title {
    font-size: 0.98rem;
  }

  .ub-resource-desc {
    font-size: 0.91rem;
  }
}

/* =========================
   Reduced motion
   ========================= */
@media (prefers-reduced-motion: reduce) {
  .ub-btn,
  .ub-chip,
  .ub-input,
  .ub-resource-link {
    transition: none;
  }

  .ub-btn:hover,
  .ub-chip:hover,
  .ub-resource-link:hover {
    transform: none;
  }
}